feat: Initial implementation of FitTrack Report Generator

This commit introduces the initial version of the FitTrack Report Generator, a FastAPI application for analyzing workout files.

Key features include:
- Parsing of FIT, TCX, and GPX workout files.
- Analysis of power, heart rate, speed, and elevation data.
- Generation of summary reports and charts.
- REST API for single and batch workout analysis.

The project structure has been set up with a `src` directory for core logic, an `api` directory for the FastAPI application, and a `tests` directory for unit, integration, and contract tests.

The development workflow is configured to use Docker and modern Python tooling.

examples/GarminSync/docker/docker-compose.yml

@@ -0,0 +1,12 @@
+services:
+  garminsync:
+    build:
+      context: ..
+      dockerfile: Dockerfile
+    # Removed entrypoint to rely on Dockerfile configuration
+    volumes:
+      - ../data:/app/data  # Persistent storage for SQLite database
+    ports:
+      - "8888:8888"
+    env_file:
+      - ../.env  # Use the root .env file